Thunderstorms with extreme rain loads, exceptional hailstorms, floods. Equally damaging periods of drought. Stronger winds, out of control temperatures. This is the menu of the climate change, and there is no climatologist able to escape the equation according to which the planet’s weather cycle reflects the increase in temperatures caused (also) by us.
Antonio Navarra, climatologist of the University of Bologna and president of the Euro-Mediterranean Center Foundation on Climate Change, explained in Repubblica what is happening recently in our skies. “There is a clear correlation between the increased concentration of carbon dioxide in the atmosphere and the frequency and intensity of floods, heat waves and periods of drought. In the specific case of precipitation, we are witnessing a gradual shift towards the north of the two bands that cross Europe. One passes through the central area of the continent, the other crosses the Mediterranean. The latter is migrating towards higher latitudes: in a few years there will be less and less rain with us. Our projections show a decrease in rainfall of between 15 and 20% for the Mediterranean area. The increase in greenhouse gases causes the Earth to retain more and more the heat coming from the Sun. Thus, an amount of energy accumulates in the atmosphere which is then released in the form of increasingly frequent and more extreme weather events.».
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The geologist Mario Tozzi, also a well-known television presence, wrote an article on the subject in La Stampa. “Looking at what is happening in Germany it seems to be in Italy: dozens of victims, destroyed houses and infrastructures, collapsed bridges and submerged villages. In a few hours, up to 250 liters of rain per square meter fell, in a typical situation of flash flood. Floods that are coupled with the extreme temperatures recorded in Canada, with the melting of polar glaciers and with the rise in sea levels. All this has a name and a surname and is called climate change, which is anomalous and accelerated compared to the past and which, unlike in past centuries, depends exclusively on the productive activities of the sapiens who vomit millions of tons of climate-altering gases into the atmosphere. combustion and improper use of the territory. In the Rhineland as in Calabria, Campania, Liguria or Veneto it is the reckless consumption of land, the overabundance of buildings and the imprisonment of rivers in unnecessary and harmful embankments and bridles that allows disaster, when the rains are excessive.. The overbuilding of the soil makes the soil impermeable so that the rainwater is no longer able to infiltrate the subsoil, as it would naturally, but engulf small and large streams that are unable to evacuate those immeasurable quantities compared to their nature. Especially when the rivers are embanked by houses and streets».
Of the same opinion Luca Mercalli, president of the Italian Meteorological Society, heard on the subject by Resto del Carlino. “I was expecting 50 degrees in Vancouver. But in twenty years, not now. I am thinking of Canada but also of Norway with 34 degrees in the North Cape, 44 in Sicily in a non-trivial sequence. And looking to the other yesterday: the severe drought of 2017, the storm that pulled down all the trees in South Tyrol at the end of 2018, the flood of last October 3 in Piedmont where there are still isolated villages. Extreme events have become the norm. We counted one a year. In the last two weeks we have not been able to keep up with the news. We pay for 40 years of non-prevention. We are facing a climate never experienced before by man, with the same conditions experienced by the planet 3 million years ago. The sea level is set to rise by 25 meters. We have to put in place grandiose and unprecedented measures, technology alone is not enough. We renounce the superfluous. I change my clothes when they fall apart, as soon as they go out of style. It applies to the mobile phone, the car, the television. For me it is voluntary blindness. The challenge to climate change is unfortunately off people’s radar».